Centrifugal machine.



No. 665,096. Pa tented Jan. l, mm.-

H. noescuau. I

CENTRIFUGAL MACHINE.

7 (Application filed Inn. 29, 1897.) '(No Model.)

ATTORNEY. v

' from ore or metals in solution, as well as sep- UNITED STATES PATENT Demon.

HENRY HOESCHEN, OF OMAHA,'NEBRASKA.

CENTRI FUGAL MAC' HIN E.

SPECIFICATION formingpart of Letters Patent No. 665,096, dated January 1, 1901.

Application filed January 29, 1897. Serial No. 621,220. (No model.)

To a whom it may concern.-

Beit known that I, HENRY HOESOHEN, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain'useful Improvements in Oentrifugals; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form apart of this specification.

This invention has relation to a new and novel improvement in continuous self-emptying centrifugal separators, filters, and driers.

The object of my invention is to provide a device that shall be adapted to be used in removing solids suspended or held within liquids or semifluid substances, such as the impurities in water and oil, or separate the liquid arate and remove lighter from heavier substances, the device being especially adaptedi for use in sugar-manufactories, for mining and milling purposes, in creameries, and, in

fact, in all arts and industries in which a machine could be used whereby a heavier substance is to be separated from a lighter,

whether in a liquid, viscous, or a solid state,

and which is self-emptying both as to the lighter as well as heavier products.

The device is further especially adapted for the filtration of water in so far that by the arrangement of my device impure and colored water can be admitted and which is later emptied,-however, in a perfectly clarified or crystal-pure condition, while the residue is also discharged.

- Figure l of the accompanying drawings shows a top view of a centrifugal separator, filter, and drier, with parts broken away, embodying my invention. Fig. 2 shows a side elevation of the same with parts removed. Fig. 3 shows a detail of one of the directionblades in position. Fig. 4shows a top view of a modification wherein a plurality of centrifugals are employed which revolve about a center or axis common to all.

The use of the centrifugal in mechanical arts and industries is well known for purposes of separating lighter from heavier particles and in the filtration of fluids where trifugal proper, within which it collects and from which it has to be removed. In the sugar industry, for instance, the sugar collects within the centrifugal and finally, after the centrifugal has run for some time, collects and packs to such a degree of hardness that I y it is with difficulty removed, the centrifugal having to be closed down while the sugar is being removed. So, also, in other arts the use of the centrifugal, while highly satisfactory, is objectionable, in that a part of the product has always got to be removed with force.

The aim of my invention is more particularly to provide a continual self-discharging centrifugal separator arranged to discharge the filtered products as well as the residue each within a separate zone. This I accomplish by providing within each centrifugal two fields, one within which is excited a centrifugal and one a centripetal force, brought about in imparting, first, a movement in a circular path to the centrifugal and, secondly, imparting a rotary movement to the centrifugal about its own axis.

In the furtherance of this object I provide a suitable base A with a projecting shaft B, around which shaft is revolubly held a frame D, which frame is in turn provided with a pulley 10, to which pulley is applied the motive power to revolve the frame D. Extending upward from this frame D are two shafts E E, preferably positioned near the end of the frame D, which shafts above are strengthened by means of the bar or holder F, which holder is provided centrally with an opening adapted to receive the cup or hopper I, as is shown in Figs. 1 and 2.

Secured to the shafts E E are two centrifugals G G, each provided with a normally open discharge-orifice of any suitable size or configuration, whioh, however, are preferably held in a slightly-angular position by virtue of the shafts E, which do not extend parallel ed to mesh with a stationary pinion 0, secured to and forming part of the stationary shaft B. Extending from the hopper I are two feed-spouts 3, one extending into each centrifugal, and above this hopper I is positioned a feed-spout K, which empties the material or substance to be filtered, dried, or separated into the hopper I, from whence it is permitted to feed, by means of the tubes or ducts 3, into the centrifugals G. This combination of inst'rumentalities would embrace an operative mechanism adapted to separate, dry, or filter and be continuous selfemptying.

Ahigh revolution isimparted to the pulley 10, which is secured to the frame D and revolves about the stationary shaft B, so that the frame D would be carried in a circular path the axis of which would be represented by the shaft B. As the centrifugals, however, are in gear connection with the stationary gear O, these centrifugals would be revolved in addition slowly about their own axis E, so that two forces would be exerted upon the substances within the centrifu gal, the first force being adapted to carry the heavier substance against the inner wall of each centrifugal in a centrifugal field within each centrifugal, the center of which would approximately be at a point pierced by a line passing through the center of the shaft B. As the material is carried with the centrifugal through the centrifugal field it is packed against the inner wall of the same; but as each centrifugal is at the same time revolved about its own axis (represented by the shafts E E) a second force, centripetal in effect in relation to said revolving centrifugal, gradually exerts a power over the material within the centrifugal, so that as the collected I material is carried to a point approximately in line with the shafts B and E this collected substance is expelled in being thrown violently forward, and as these centrifugals revolve there is a continual shower of solid substances in two circles represented by the path of the centrifugal, the heavier material being thrown forward and upward and the lighter forward and downward or below. To give this collected and later expelled material direction in leaving the centrifugal, I provide each with a scoop 5, secured to the frame F by means of the arms 6, so that the stuif is collected and given an upward direction in leaving the centrifugal. The lighter material flows over the edge of the centrifugal proper or works through the openings 2, which can be placed in the centrifugal proper, and which latter is then covered by a suitable filtering substance 9, which may be a net, mineral wool, or any othersuitable material. It will be noticed that I have set these centrifugals at an angle, which is done so that the solids collected will more readily empty. By this means the heavier or coarser particles are expelled above the line represented by the point traversed by the scoop 5, while the lighter particles are delivered downward below a point represented by the top or upper edge of the centrifugal at its lowest point.

In use a collector is built about the centrifugals, so that the lighter and coarser particles are collected within separate vats or receptacles. When water is filtered, for instance, it empties fromthe spout K into the hopper or receptacle I and from thence washes through the ducts 3 into the rapidlyrevolving centrifugals, and the wash of the emptying water or substance, it should here be mentioned, aids in loosening the substance which is packed against the inner wall within the centrifugal. The impurities in the form of slime and other substances are loosened by the infeeding stream and later expelled at a point near the common center of both centrifugal forces and is given an upward direction by the scoop 5, while the crystal-pure water washes over the upper edge or through the filter-openin gs of the centrifugals and is emptied below the line at which the impurities are discharged.

To further aid the self-discharge of the de vice, I provide suitable blades 4, (shown in Fig. 3,) which are positioned within the centrifugals, but are secured to the revolving standard F, so that the impurities are dashed against these blades in leaving the centrifugals.

To lessen the great strain upon the axis E E, a steel band, pulley, cable, or other means M may be used to hold these two centrifugals together, though, if desired, a wheel or flange could be provided, as is shown in Fig. at, against the inner periphery of which the centrif u gals would work, so as to relieve the great strain upon the axis E.

It is of course understood that but one centrifugal could be used, which would be given, first, a swift movement in a circular path and, second, a slower rotary movement about its own center. In practice, however, a battery of two or more of these centrifugals is used, and in Fig. 4 Ihave shown a batteryin which eight centrifugals are shown revolving about a common center.

It will be noticed that the hopper or receptacle I revolves independent and below the feed-spout K, so that a continuous feed can be provided to permit the continuous entering of substance to be separated, filtered, or dried, and this substance as soon as it is separated, filtered, or dried is collected into two or more separate parts and is self-emptied, each substance emptying in a separate zone, by which arrangement it is of course understood that all the labor incident to the removal of the collected product within the centrifugal is eliminated, which is of inestimable value.

Now, having thus described my said invention, what I claim as new, and desire to secure by United States Letters Patent, is-

1. The combination with a carrier, of mechanism to revolve said carrier, a vessel se- IIO and extending into said vessels and positioned between the axis of said vessel and the axis of said revolving carrier, and a series of scoops positioned external to said vessels and extend r 5 ing into the same.

In'testimony whereof I affix my signature in presence of two witnesses. v

' HENRY HOESCHEN.

Witnesses:

JOHN A. MOSHANE, JNo. M. DAUGHERTY. 

